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Formula SAE-China will be held the first time in September, 2010. How to design a suitable front wing for a Formula SAE race car is discussed in this paper. First we choose a series of front wings and study their dynamics property in different attack angle by the method of CFD. Then we put two or three wings together to be assemble wings and study their property. The results are compared and analyzed...
This article mainly uses the Granger test and Eviews software of econometrics to process data. We can obtain conclusion through Granger causality test of the arable and construction land datas for six years of Xi'an city, construction land's increase is the Granger origin of the arable reduces, but the arable's reduction is not the construction land increases' Granger origin, the arable reduction...
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